January 1, 1694 |
Published Onsigbare Geschapene Waarheden (Invisible Creation Truths), Letters 32, 39, 33 |
January 1, 1694 |
Published Vierde Vervolg der Brieven (Fourth Continuation of the Letters), Letters 76 - 83 |
January 6, 1694 |
wife Cornelia Johannes Swalmius buried |
January 19, 1694 |
Wrote Letter L-232 of 1694-01-19 to Richard Waller as a cover letter for Letter L-231 |
January 24, 1694 |
Wrote Letter L-233 of 1694-01-24 to the members of the Royal Society about tapeworms and salt and sand in cod intestines |
February 10, 1694 |
Richard Waller wrote Letter L-234 to Leeuwenhoek, asking him to examine the colors of birds' feathers and other bodies, such as silk, paint, and mercury and whether he had observed sperm inside of an egg |
February 12, 1694 |
Presented act of guardianship to the Weeskamer after Cornelia's death |
February 12, 1694 |
Wrote Letter L-235 of 1694-02-12 to Richard Waller as a cover letter for Letter L-233 |
February 24, 1694 |
Wrote Letter L-236 of 1694-02-24 to the members of the Royal Society about his experiments with solid phosphorus |
February 28, 1694 |
Benedictus Haan wrote Letter L-237 to Leeuwenhoek agreeing with him against George Garden about the female ovary |
March 2, 1694 |
Antonio Magliabechi wrote Letter L-238 of sometime before 1694-03-02 to Leeuwenhoek about recent books that he thought might be of interest |
March 2, 1694 |
Presented Cornelia's will to the Weeskamer |
March 2, 1694 |
Wrote Letter L-239 of 1694-03-02 to the members of the Royal Society about ear wax and hair, body hair, the amount of sweat secreted from the human body, and the possibility that sperm might penetrate the ovum |
March 19, 1694 |
Wrote Letter L-240 of 1694-03-19 to the members of the Royal Society refuting George Garden's ideas in Letter L-227 about the role of the ovary and eggs |
April 2, 1694 |
Wrote Letter L-241 of 1694-04-02 to the members of the Royal Society about the tongue of an ox and a pig and the heart of a sheep, ox, duck, chicken and cod |
April 30, 1694 |
Wrote Letter L-242 of 1694-04-30 to the members of the Royal Society about his criticisms of Buonanni's theory of spontaneous generation, about mussels, barnacles, shrimp larvae, the eye of a dragon-fly, gnat, fly, and ant, and about ant eggs |
May 2, 1694 |
Richard Waller wrote Letter L-243 to Leeuwenhoek about recent observations, to request a portrait, and to introduce Mr. Walfort, who delivered it |
May 11, 1694 |
Received an honorarium from the city for Vierde Vervolg der Brieven (Fourth Continuation of the Letters) |
May 26, 1694 |
Wrote Letter L-244 of 1694-05-26 to Richard Waller, cover letter for copy of Vierde Vervolg der Brieven |
June 4, 1694 |
Visited Pieter Rabus in Rotterdam |
July 7, 1694 |
Royal Society accepted gift of Vierde Vervolg der Brieven and read Leeuwenhoek's cover letter, Letter L-244 |
July 30, 1694 |
Arnold Ramp appointed tax collector for livestock sales |
September 14, 1694 |
Wrote Letter L-245 of 1694-09-14 to Richard Waller about blood circulation and having sent six copies of his portrait to London |
November 3, 1694 |
Lent 400 guilders to Leendert van Bijstervelt |
November 24, 1694 |
cousin Maerten Huijchs Leeuwenhoek buried |
November 29, 1694 |
microscopist Marcello Malpighi died |
November 30, 1694 |
Wrote Letter L-246 of 1694-11-30 to Pieter Rabus about about dragon-fly eyes and eggs, crab eyes, vertebrate corneas, another rejection of spontaneous generation, and the impregnation of women |
January 1, 1695 |
Published Arcana Naturae Detecta (Nature's Mysteries Disclosed), Letters 32, 33, 37, 39 - 41, 61 - 92 |
January 1, 1695 |
Published Register van alle de Werken, Letters 28 - 83 |
April 10, 1695 |
Wrote Letter L-247 of 1695-04-10 to Anthonie Heinsius about blood and its circulation in a crab's leg, crystals in evaporated crab blood, and the hairs on a crab's leg |
April 22, 1695 |
Wrote Letter L-248 of 1695-04-22 to Frederik Adriaan van Reede about the apple-blossom weevil, its larvae, their danger, and their metamorphosis and the reproduction of black flies on apple tree blossoms |
April 30, 1695 |
Bought bonds and annuities from the city of Delft |
May 1, 1695 |
Frederick Adriaan van Reede wrote Letter L-249 sometime in early May 1695 that he was pleased with Leeuwenhoek’s observations about the apple-blossom weevil and black flies on apple tree blossoms |
May 1, 1695 |
Pieter Rabus wrote Letter L-250 to Leeuwenhoek, a "pleasant" letter now lost |
May 1, 1695 |
Wrote Letter L-251 of 1695-05-01 to Anthonie Heinsius about weevils, nutmegs and their safe storage, and tobacco seeds and their germination |
May 2, 1695 |
Maarten Etienne van Velden wrote Letter L-252 to Leeuwenhoek about two printed works and a box of flies |
May 18, 1695 |
Wrote Letter L-253 of 1695-05-18 to Frederik Adriaan van Reede about the apple-blossom weevil, caterpillars and the metamorphosis of the small ermine moth, and parasitic flies |
May 21, 1695 |
Wrote Letter L-254 of 1695-05-21 to Pieter Rabus about the eggs and blood vessels of the ray |
May 23, 1695 |
Wrote Letter L-255 of 1695-05-23 to Maarten Etienne van Velden about the impossibility of small flies being generated from the body of a big dead caterpillars, again refuting the theory of spontaneous generation |
May 30, 1695 |
Maarten Etienne van Velden wrote Letter L-256 about his dissatisfaction with Leeuwenhoek's views on spontaneous generation in Letter L-255 |
June 1, 1695 |
Frederick Adriaan van Reede wrote Letter L-257 sometime in June 1695 that he was pleased with Leeuwenhoek’s further observations about garden pests |
June 21, 1695 |
Pieter Rabus wrote Letter L-258 asking for Leeuwenhoek’s comments on a letter he had received about caterpillars that were growing in a woman’s ears |
June 28, 1695 |
Visited by Johann Wilhelm von Pfalz-Neuburg, Elector Palatine, his wife and his mother |
July 1, 1695 |
A doctor from Zeeland, Angelus van Wijkhuysen, wrote Letter L-259 to request Leeuwenhoek's opinion on the origin of flies from a dead caterpillar |
July 8, 1695 |
Christiaan Huygens died |
July 10, 1695 |
Wrote Letter L-260 of 1695-07-10 to Frederik Adriaan van Reede about aphids, their reproduction, and the unsuccessful search for male aphids |
July 12, 1695 |
Wrote Letter L-261 of 1695-07-12 to Maarten Etienne van Velden about the metamorphosis of caterpillars and of parasitic larvae coming out of a dead caterpillar |
July 20, 1695 |
Wrote Letter L-262 of 1695-07-20 to Anthonie Heinsius about about scales from his own skin, wool threads from his stockings, salt from his sweat, and air bubbles and salt crystals from his ear wax |
July 21, 1695 |
Wrote Letter L-263 of 1695-07-21 to Pieter Rabus about the report that a large caterpillar emerged from a woman's ear and fumigation with sulphur to remove it; Leeuwenhoek cannot find any mites in his own auditory canal |
August 15, 1695 |
Wrote Letter L-264 of 1695-08-15 to Frederik Adriaan van Reede about oysters and their larvae, repudiating spontaneous generation |
August 15, 1695 |
Wrote Letter L-265 of 1695-08-15 to Antonio Magliabechi, the dedication of Arcana Naturae Detecta |
August 16, 1695 |
Wrote Letter L-266 of 1695-08-16 to inform Antonio Magliabechi that he has dedicated Arcana Naturae Detecta to him; he mentions the visit of the Elector Palatine |
August 18, 1695 |
Wrote Letter L-267 of 1695-08-18 to Anthonie Heinsius about detonating gunpowder in a closed glass bulb and measuring the increase in volume after the explosion; in a partial vacuum, glass bulbs may implode |
August 20, 1695 |
Wrote Letter L-268 of 1695-08-20 to Frederik Adriaan van Reede about again about oysters and their sperm and aphids and other parasites |
September 1, 1695 |
A certain gentleman, Angelus van Wijkhuysen, wrote Letter L-269 before September 1695 to inform Leeuwenhoek about mussel gatherers and a minister who believed that mussels are formed by spontaneous generation |
September 10, 1695 |
Wrote Letter L-270 of 1695-09-10 to Pieter Rabus about his attempt to breed maggots with his own ear-wax as food and a movement in his ear due to the vibration of a little hair against the ear-drum |
September 18, 1695 |
Wrote Letter L-271 of 1695-09-18 to Johann Wilhelm von Pfalz-Neuburg about swan mussel sperm, eggs, embryos, and locomotion, small animals as food for larger ones and oysters and their larvae; he again refutes spontaneous generation |
October 12, 1695 |
Antonio Magliabechi wrote Letter L-272 of 1695-10-12 to thank Leeuwenhoek for dedicating Arcana Natura Detecta to him and to report on several recent books written in Latin and Italian by Italians that he thought might be of interest |
October 14, 1695 |
Antonio Magliabechi wrote Letter L-273 to praise Leeuwenhoek |
October 18, 1695 |
Wrote Letter L-274 of 1695-10-18 to Antonio Magliabechi to accompany a parcel of books, which Leeuwenhoek gave to Baron Bettino Riasoli for delivery |
October 23, 1695 |
Antonio Magliabechi wrote Letter L-275 of 1695-10-23 to Leeuwenhoek about recent books in Latin and Italian by Italians that he thought might be of interest |
October 31, 1695 |
Wrote Letter L-276 of 1695-10-31 to Magliabechi to acknowledge the receipt of Magliabechi's Letter L-272, to report on the books he sent and on his recent Letter L-271 to Johann Wilhelm von Pfalz-Neuburg |
October 31, 1695 |
Wrote Letter L-277 of 1695-10-31 to Jacob Calckberner to request that he forward a package of books to Magliabechi |
November 1, 1695 |
His Excellency Mr.... wrote Letter L-278 of sometime before November 1695 on the day he left Düsseldorf, a lost letter |
November 3, 1695 |
Wrote Letter L-279 of 1695-11-03 to Johann Wilhelm von Pfalz-Neuburg about larvae from swan mussels, little animals in water taken out of swan mussels, and extracts from letters to Oldenburg and Brouncker about the quantity of little animals |
November 5, 1695 |
Antonio Magliabechi wrote Letter L-280 to again praise Leeuwenhoek |
December 1, 1695 |
Wrote Letter L-281 of 1695-12-01 to Frederik Adriaan van Reede, the dedication of the Fifth Continuation of the Letters (Vijfde Vervolg der Brieven) |
December 19, 1695 |
Received an honorarium from the city for the Fifth Continuation of the Letters (Vijfde Vervolg der Brieven) |
December 22, 1695 |
Wrote Letter L-282 of 1695-12-22 to acknowledge the receipt of two letters by Magliabechi and to tell him once again that the books have been forwarded to him |
December 28, 1695 |
Wrote Letter L-283 of 1695-12-28 to Hendrik van Bleyswijk about herring, their stomach worms, the food in herring stomachs, and how small fish like herring catch food |
January 1, 1696 |
Published Antony van Leeuwenhoeks 37ste Missive, Geschreven aan (Written to) de Heer Cristopher Wren |
January 1, 1696 |
Published Antony van Leeuwenhoeks 40ste Missive, Geschreven aan (Written to) de Heer Francois Aston |
January 1, 1696 |
Published Arcana Naturae Microscopiorum (Nature's Mcroscopical Mysteries), 19 Letters from 28 - 52 (2nd) |
January 1, 1696 |
Published Continuatio Epistolarum (Continuation of the Letters), Letters 53-60 (2nd) |
January 1, 1696 |
Published Levende Dierkens (Living Animals), Letters 28 - 31, 34 - 36 (2nd) |
January 1, 1696 |
Published Sout-figuren (Salt figures), Letters 44, 45 (2nd) |
January 1, 1696 |
Published Vijfde Vervolg der Brieven (Fifth Continuation of the Letters), Letters 84 - 96 |
February 17, 1696 |
Hans Sloane wrote Letter L-284 of 17 February 1696 on behalf of the Royal Society to encourage Leeuwenhoek |
February 20, 1696 |
Wrote Letter L-285 of 1696-02-20 to Frederik Adriaan van Reede about the anatomy of the body louse, especially the sexual organs and the louse's rapid reproduction, and his opposition to Jonston's and Kircher's observations on lice |
March 6, 1696 |
Antonio Magliabechi wrote Letter L-286 to Leeuwenhoek, reporting that he finally received the copies of Arcana Naturae Detecta, one for Grand Duke Cosima III |
March 8, 1696 |
Wrote Letter L-287 of 1696-03-08 to Nicolaas Witsen about white mace caused by vermin, a moth from a larva taken from mace, larvae and wings of the merchant grain beetle, and nutmeg; warehouses should be painted to protect spices from vermin |
May 2, 1696 |
The Royal Society decided to resume correspondence with Leeuwenhoek |
May 16, 1696 |
Pieter Rabus wrote Letter L-288 to Leeuwenhoek about dowsing rods |
June 1, 1696 |
Wrote Letter L-289 of 1696-06-01 to Pieter Rabus about dowsing rods and the hazel branches used to make them, iron, and loadstone |
June 5, 1696 |
Antonio Magliabechi wrote Letter L-290 to Leeuwenhoek about the book dedicated to him |
June 9, 1696 |
Asked to keep safe disputed sacks of buckwheat while the magistrates heard the case |
June 27, 1696 |
Named as renter of a garden outside the Schoolpoort |
July 1, 1696 |
Nicolaas Witsen wrote Letter L-291 of sometime before July 1696 to Leeuwenhoek about an enclosed mineral, map, and letter |
July 6, 1696 |
Wrote Letter L-292 of 1696-07-06 to Nicolaas Witsen about his analysis of the mineral that Witsen sent with Letter L-291, ant stings, and lacquer particles on a tree that originate from the tree itself, not from ants |
July 8, 1696 |
Antonio Magliabechi wrote Letter L-293 to Leeuwenhoek about a packet of books that had arrived |
July 10, 1696 |
Wrote Letter L-294 of 1696-07-10 to Nicolaas Witsen about demonstrating the rotation of the earth with the aid of a glass globe filled with water in which wax particles are floating. |
July 10, 1696 |
Wrote Letter L-295 of 1696-07-10 to the members of the Royal Society about the circulation of blood in eels; mites, figs, strawberries, and a lobster's leg; a transcription of Christiaan Huygens's Letter L-223 about the reproduction of eels |
July 16, 1696 |
Wrote Letter L-296 of 1696-07-16 to Frederik Adriaan van Reede about the male and female sexual organs of oysters and their larvae |
July 23, 1696 |
Wrote Letter L-297 of 1696-07-23 to Pieter Rabus honey-dew on lime-trees; moisture from vine tendrils leads to a theory on the production of lacquer in tropical trees; his Delft friend has lost the capacity to handle the dowsing-rod |
July 30, 1696 |
Pieter Rabus wrote Letter L-298 to Leeuwenhoek, more about honey-dew and dowsing rods |
August 18, 1696 |
Traveled to Zeeland to visit friends in Zierikzee |
August 23, 1696 |
Frederick Adriaan van Reede wrote Letter L-299 of 1696-08-23, a "welcome letter" |
August 26, 1696 |
Wrote Letter L-300 of 1696-08-26 to Frederik Adriaan van Reede about plant-lice, its embryos and parasitization, black flies and their caterpillars on apple-trees, and English oysters from Zierikzee |
August 28, 1696 |
Wrote Letter L-301 of 1696-08-28 to Antonio Magliabechi to acknowledge receipt of Letter L-293, to inquire about the reaction of the grand duke to his work, and to thank Magliabechi for sending printed matter and book news from Italy |
August 29, 1696 |
Wrote Letter L-302 of 1696-08-29 to Hendrik van Bleyswijk about oak-wood containing beetle larvae, which appeared to be able to feed on wood, and the cause of the differences in quality of oak-wood |
September 7, 1696 |
Wrote Letter L-303 of 1696-09-07 to thank Magliabechi for Letter L-290 of 5 June and Letter L-293 of 8 July 1696 and to request that Magliabechi spare him exaggerated praise henceforth |
September 12, 1696 |
Wrote Letter L-304 of 1696-09-12 to Anthonie Heinsius about rennet and curd, chalk and crab's-eyes in vinegar, smoking tobacco to cure toothache, the gall-bladder and omasum of a calf, milk-clotting, and his contradiction of a physician |
September 27, 1696 |
Wrote Letter L-305 of 1696-09-27 to Hendrik van Bleyswijk about the age of fishes, especially herring, using scales and the structure of greater weever's spine and the painfulness of its sting |
October 26, 1696 |
Wrote Letter L-306 of 1696-10-26 to Maarten Etienne van Velden to accompany a presentation copy of his printed letters, Sesde Vervolg Der Brieven (Sixth Continuation of the Letters) |
October 30, 1696 |
Wrote Letter L-307 of 1696-10-30 to a "gentleman in Brabant", a cover letter accompanying a copy of Sesde Vervolg der Brieven |
November 6, 1696 |
Received an honorarium from the city for the Sixth Continuation of the Letters |
November 10, 1696 |
A gentleman in Brabant wrote Letter L-308 of sometime in November 1696 to Leeuwenhoek about his long-held Copernican ideas |
November 15, 1696 |
Wrote Letter L-309 of "latter part" of 1696 to Harmen van Zoelen about what I had learned from an East India Trader |
December 18, 1696 |
Antonio Magliabechi wrote Letter L-310 to Leeuwenhoek with reports on several recent books that he thought might be of interest written in Latin by Italians |
December 18, 1696 |
Hans Sloane wrote Letter L-311 of 1696-12-18, as instructed by the Royal Society |
January 1, 1697 |
Gottfried Leibniz wrote Letter L-312 to Leeuwenhoek about magnets and the magnetic power of the earth |
January 1, 1697 |
Published Continuatio Arcanorum Naturae detectorum (Continuation of Nature's Mysteries Disclosed), Letters 93 - 107 |
January 1, 1697 |
Published Sesde Vervolg der Brieven (Sixth Continuation of the Letters), Letters 97 - 107 |
January 1, 1697 |
Published Tweede Vervolg der Brieven (Second Continuation of the Letters), Letters 61 - 67 (2nd) |
January 1, 1697 |
Published Zaden van Boomen (Seeds of Trees), Letters 46, 47 (2nd) |
January 1, 1697 |
Received fees from new citizens in the name of the city's camerbewaarders and messengers |
February 4, 1697 |
Maarten Etienne van Velden wrote Letter L-313 to Leeuwenhoek about receiving Sesde Vervolg der Brieven |
February 12, 1697 |
Wrote Letter L-314 of 1697-02-12 to Maarten Etienne van Velden, regretting Van Velden's difficulties caused by his defence of Copernicus and in support, enclosing a copy of a letter from a gentleman in Brabant |
February 19, 1697 |
Wrote Letter L-315 of 1697-02-19 to Hans Sloane about sending Sesde Vervolg der Brieven and wanting to receive the latest Philosophical Transactions and the works of Malpighi |
March 13, 1697 |
Royal Society read Letter L-315 of 19 February 1697 and agreed to send Philosophical Transactions |
March 25, 1697 |
Wrote Letter L-316 of 1697-03-25 to the members of the Royal Society as a cover letter to Continuatio Arcanorum Naturae |
April 1, 1697 |
Pieter vander Slaart wrote Letter L-317 some months before April 1697 about visiting Leeuwenhoek with a German doctor |
April 1, 1697 |
Visited by Johann Anderson, a German lawyer and natural scientist |
April 5, 1697 |
Wrote Letter L-318 of 1697-04-05 to the members of the Royal Society about experiments with magnets, a meniscus in a glass, and patients given 'sympathetic' powder as a medicine by a German quack doctor |
May 1, 1697 |
Antonio Magliabechi wrote Letter L-319 in spring 1697 with a booklet by Dr. Scaramucci about elephant bones found in Saxony |
May 7, 1697 |
Gottfried Leibniz wrote to Hendrik van Bleyswijk about the need for Leeuwenhoek to train students in order to render "even greater services to the human race" |
May 15, 1697 |
Wrote Letter L-320 of May 1697 to Victor van Beughem about how to distribute the enclosed copies of Continuatio Arcanorum Naturae |
May 17, 1697 |
John Harwood wrote Letter L-321 of 1697-05-17 to Leeuwenhoek about enclosed issues of Philosophical Transactions |
June 1, 1697 |
Antonio Magliabechi wrote Letter L-322 with more news of recently published books in Italian and Latin by Italians; sent gift book to Leeuwenhoek |
June 1, 1697 |
Visited by Sir Francis Child, an English banker and politician |
June 6, 1697 |
Wrote Letter L-323 of 1697-06-06 to Antonio Magliabechi about marine fossils found in mountain rocks and the present of copies of Continuatio Arcanorum Naturae sent to Florence |
July 1, 1697 |
Wrote Letter L-324 of 1697-07-01 to Luca Giamberti to request that he send Magliabechi's gift book by a freighter from Cologne via Düsseldorf to Dordrecht |
July 3, 1697 |
Royal Society read Letter L-316 of 25 March 1697, and asked Robert Hooke to review the enclosed Continuatio Arcanorum Naturae |
July 19, 1697 |
Luca Giamberti wrote Letter L-325 to Leeuwenhoek about a gift book from Magliabechi |
August 1, 1697 |
Antonio Magliabechi wrote Letter L-326 in August 1697 with more news of recently published books in Italian and Latin by Italians that he thought might be of interest |
August 18, 1697 |
Jan van Leeuwen wrote Letter L-327 of 1697-08-18 to Leeuwenhoek, sending a box of straw and wheat ears said to have been ruined by honey-dew falling from the sky |
September 3, 1697 |
Visited neice Rijcke van Leeuwen in Rotterdam |
September 3, 1697 |
Wrote Letter L-328 of 1697-09-03 to Jan van Leeuwen about ears of wheat with smut and a theory of fungous disease in grain; refutes the notion that honey-dew causes smut ears |
September 10, 1697 |
Wrote Letter L-329 of 1697-09-10 to the members of the Royal Society about small white eggs mixed with earth, a pulsating pulmonary vein in an egg, Roman snails, the rootlets of a wheat grain, one of his own teeth, and young oysters |
October 12, 1697 |
cousin Jannetje Maertens (Johanna) Leeuwenhoek married Frans van Trigt |